Mahle 42086CP OE Chrome Ring Set STD for Chrysler 2.4L Turbo L4 Neon SRT-4 PT

Vehicle Fitment

• 2003-2005 Dodge Neon SRT-4 (2.4L Turbocharged SOHC L4, VIN E, Engine Code A855)
• 2004-2006 Chrysler PT Cruiser GT / Turbo (2.4L Turbocharged SOHC L4, VIN E)
• 2004-2009 Chrysler PT Cruiser Turbo-Lite (2.4L Turbocharged SOHC L4, VIN E)

Fitment Notes

• Designed specifically for the Chrysler 2.4L Turbocharged L4 engine (VIN code "E", A855 engine); confirm VIN code before ordering
• Standard bore (STD) - for use with an unmodified 87.5mm (3.445") cylinder bore only; oversize variants available (.010 = 42086CP.010 through .040 = 42086CP.040)
• These are the same OEM-sourced Mahle rings used in factory SRT-4 production; designed to fit OEM pistons without modification
• Does not fit the naturally aspirated Chrysler 2.4L (non-turbo) EDZ engine; confirm turbo engine application before ordering

Features

• Chrome-faced top compression ring engineered for superior wear resistance and reliable combustion sealing under the SRT-4's elevated boost pressures and operating temperatures
• Reverse-twist second compression ring for effective oil control and improved groove-side sealing on both intake and power strokes
• Three-piece oil control ring assembly with 2.5mm height - the unique narrow oil ring matches the factory Chrysler turbo piston specification, differing from non-turbo variants
• Pre-lapped ring faces seat quickly, minimizing break-in time and restoring compression to factory levels
• OE-quality materials and tolerances - engineered to the same specifications supplied to Chrysler for original factory assembly
• CNC-controlled gap chamfer on compression rings helps optimize combustion retention and reduce blow-by

Specifications

• Engine: Chrysler 2.4L Turbocharged SOHC L4 (VIN E, A855 engine code, 16-valve)
• Bore Diameter: 87.5mm (3.445") - Standard (STD)
• Top Ring Coating: Chrome-faced
• Second Ring Type: Reverse-twist compression ring
• Oil Ring Thickness: 2.5mm (narrow oil ring - specific to turbo A855 piston)
• Oil Ring Assembly: Three-piece, stainless steel expander, chrome-faced rails
• Oversize: Standard (STD) - oversize variants available (.010, .020, .030, .040)
• Cylinder Count: 4-cylinder set (4 complete ring sets per package)

Included Components

• 4x Chrome-faced top compression rings
• 4x Reverse-twist second compression rings
• 4x Three-piece 2.5mm oil control ring assemblies

Product Description

The MAHLE 42086CP is an OE-replacement piston ring set engineered specifically for the Chrysler 2.4L Turbocharged L4 engine (VIN E / A855) as used in the 2003-2005 Dodge Neon SRT-4 and 2004-2009 Chrysler PT Cruiser Turbo. These are the same Mahle-sourced rings used in original factory SRT-4 production - Dodge's SRT division selected Mahle eutectic aluminum pistons for the A855 build, and this ring set is the direct OE-replacement counterpart. The chrome-faced top ring delivers reliable combustion sealing under sustained boost, while the reverse-twist second ring controls oil migration in the 2.4L's aluminum cylinder bores.

The most important specification distinguishing this set is the 2.5mm oil control ring, which is narrower than the oil rings used in naturally aspirated Chrysler 2.4L applications. This dimension is specific to the A855 turbo piston's oil ring groove and must be matched exactly for proper ring fit and oil control. Offered at standard bore (87.5mm / STD), oversize variants (.010 through .040) are available under suffixed part numbers for engines that have been re-bored.